Sash-fastener



(No Model.)

M. BOURKE.

SASH PASTENER.

Patented Dec. 1,1885.

WITJVESSES` H f UNITED STATES PATENT OFFICE.

MARTIN EOUEKE, oF YoUNGsTowN, oHIo.

SASH-FASTENER.

SPECIFICATION forming part of Letters Patent No. 331,370, dated December1, 1885.

Application filed March 2,1885. Serial No. 157,512. (No model.)

To all whom it may concern:

Be it known that I, MARTIN BOURKE, a citizen of the United States,residing at Youngstown, in the county of Mahoning and Stateof Ohio, haveinvented certain new and useful Improvements in Sash-Fasteners; and I dohereby declare that the following is a full, clear, and exactdescription of the same, reference being had to the annexed drawings,making a part of this specification, and to the letters and figures ofreference marked thereon.

Figure 1 of the drawings is a perspective view of my improvedsash-fastener; Fig. 2, a side elevation of the fastener with thecapplate removed, and showing the ratchet of the bolt engaging with theratchet-bar; Fig. 3, a sectional view of the fastener; Fig. 4, a detailview in perspective of the cap-plate of the fastener; Fig. 5, a detailview of the outer side of the cap-plate; Fig. 6, a perspective View ofone form of ratchet-bar, and Fig. 7 a detail view in perspective of thebolt.

The present invention has for its object to provide a simple andeffective sash-fastener that will securely hold the sash raised at anyrequired height and in a closed position, and a fastener that can beeasily operated, which objects I attain by the constructionsubstantially as shown in the drawings and hereinafter described andclaimed.

In the accompanying drawings, A represents the case for receiving theseveral operating parts of the fastener, said case having iianges a withholes therein to receive the fastening-screws. To the case A is pivoteda cam, B, having a groove, b, therein to receive the anged end c of abolt, C. This cam B is provided with a lever-handle, D, having afish-tail thumb-piece, E, the thumb being brought to position, as at d,while the two fingers are brought around the inner sides of thefish-tail, as at e, thus enabling the lever to be more convenientlyoperated in either direction with increased leverage. The groove b inthe cam B is continuous and on a true circle. The pivot f, whicheccentrically connects the cam to the case A, also connects thecap-plate F. This plate F,upon its interior,is constructed as shown inFig. 4, the mortise 5o g forming a seat for the bolt C. The bolt C hasan elongated opening, h., through it to receive a square guide-pin, i,so as to prevent the bolt from rattling when operated by the lever, andguiding it in its backward and forward movement. The :flanged end of thebolt C, at a point where it enters the groove b, is made convex, so asto bring as little surface in contact with the flange of the groove aspossible, in order to decrease its friction and render it more easilyoperated, the convexity of the flanged end c being shown in dottedlines, Fig. 2. Ihe bolt C, at its outer endl, is provided with aratchet-plate, G, to engage with a corresponding ratchet-bar, H, to besecured to the frame of the window.

The ratchet-teeth are formed in two independent rows, as shown at la,which renders the teeth more effective than were the teeth extendedclear across the bar orl plate, the space between the rows enabling theheads of the fastening-screws to seat themselves without interferingwith the ratchet-teeth.

rlhe most preferable form of ratchet-teeth I have shown in Figs. 2 and7,which are made double, each tooth of the pair inclining in oppositedirections, as shown at Z.

In the ratchet-teeth shown in Figs. l and 6, in addition to holding thesash elevated at any height, in lowering the sash, should it be let goof suddenly, the weight of the lever D would force out the bolt O,andthe ratchetteeth thereon made to engage with the teeth on the bar,thus preventing the breaking of the glass in the sash by the suddenfall.

The double ratchet-teeth shown in Figs. 2 and 7 not only act in the samemanner as described above, but lock the sash when down in eitherdirection.

Having now fully described my invention, what I claim as new, and desireto secure by Letters Patent, is-

1. A sash-fastener consisting of a suitable casing, a sliding boltworking in guides therein and slotted in the direction of `its movement,a square pin passing through the case and the slot in the bolt, to limitits movement and prevent oscillatory motion thereof, and a grooved camengaging the bolt and terminating in a lever having a sh-tailthumb-piece,

the parts being constructed, arranged, and Ico operating substantiallyas and for the purposes set forth.

2. In a sash-fastener, the combination, with a bar adapted forattachment to a Window- 5 frame,and provided With two vertical rows ofdouble ratchet-teeth set at equa-1 distances apart, leaving squarerecesses between them,

each tooth being reverseiy inclined, of a bolt provided Withsimilarlyformed teeth and 1o spaces operated by a pivoted grooved camen# gaging with the flanged end of Vthe bolt, substantiaily as and forthe purpose set forth.

In testimony that I claim the above I have hereunto subscribed my nameinthe presence of two witnesses.

. MARTIN BOURKE.

Vitnesses:

CEAS. M. NYE, C. A. NEALE.

